Telephone instrument base



FIG. 1 is a perspective view of a telephone instrument base, showing our new design;

FIG. 2 is a side elevation thereof, the opposite side being a mirror image of the side shown;

FIG. 3 is a front elevation thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a rear elevation thereof;

FIG. 6 is a perspective view of a second modified embodiment of the telephone instrument base shown in FIG. 1 in the form of a wall telephone instrument base;

FIG. 7 is a side elevation thereof, the opposite side being a mirror image of the side shown;

FIG. 8 is a top elevation thereof;

FIG. 9 is a front plan view thereof; and

FIG. 10 is a bottom elevation thereof. 

The ornamental design for a telephone instrument base, as shown and described. 